# frozen_string_literal: true

# Redmine plugin for Document Management System "Features"
#
# Karel Pičman <karel.picman@kontron.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

# Folder parent validator
class DmsfFolderParentValidator < ActiveModel::EachValidator
  # Don't allow save folders with a parent pointing to the same folder
  def validate_each(record, attribute, value)
    folder = value
    while folder
      if folder == record
        record.errors.add attribute, :invalid
        return false
      end
      folder = folder.dmsf_folder
    end
    true
  end
end
